# Contents of /trunk/doc/examples/usersguide/darcy.py

Revision 4853 - (show annotations)
Wed Apr 9 05:41:57 2014 UTC (5 years, 6 months ago) by jfenwick
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```Added import division and changed a few / to //

```
 1 from __future__ import division 2 ############################################################################## 3 # 4 # Copyright (c) 2003-2014 by University of Queensland 5 6 # 7 # Primary Business: Queensland, Australia 8 # Licensed under the Open Software License version 3.0 9 10 # 11 # Development until 2012 by Earth Systems Science Computational Center (ESSCC) 12 # Development 2012-2013 by School of Earth Sciences 13 # Development from 2014 by Centre for Geoscience Computing (GeoComp) 14 # 15 ############################################################################## 16 17 __copyright__="""Copyright (c) 2003-2014 by University of Queensland 18 http://www.uq.edu.au 19 Primary Business: Queensland, Australia""" 20 __license__="""Licensed under the Open Software License version 3.0 21 22 __url__= 23 24 from esys.escript import * 25 from esys.escript.models import DarcyFlow 26 from esys.finley import Rectangle 27 from esys.weipa import saveVTK 28 # generate domain: 29 mydomain = Rectangle(l0=2.,l1=1.,n0=40, n1=20) 30 # normal flux is given 31 x = mydomain.getX() 32 33 # set location of fixed pressure and flux: 34 p_BC=whereZero(x[1]-1.)*wherePositive(x[0]-1.) 35 u_BC=(whereZero(x[0])+whereZero(x[0]-2.)) * [1.,0.] + \ 36 (whereZero(x[1]) + whereZero(x[1]-1.)*whereNonPositive(x[0]-1.0)) * [0., 1.] 37 38 # define darcy flow solver: 39 mypde = DarcyFlow(domain=mydomain) 40 41 mypde.setValue(g=[0., 2], 42 location_of_fixed_pressure=p_BC, 43 location_of_fixed_flux=u_BC, 44 permeability=100.) 45 46 u,p=mypde.solve(u0=x[1]*[0., -1.], p0=0) 47 48 # write u to an external file 49 saveVTK("u.vtu",flux=u, pressure=p) 50